Duan Teng-fei, Zuo Lin-zi, Zhang Li-xin, et al. Determination of Volatile Sulfur Compounds in Livestock Waste Compost by Gas Chromatography-ion Mobility Spectrometry[J]. 2024, 41(5): 66-71.
,回收率为85%~116%,相对标准偏差(Relative Standard Deviation,RSD)为1.13%~8.42%。该方法无需浓缩富集等预处理,仅采用气袋就可完成堆肥恶臭气体的收集,检测灵敏、响应快速,可用于堆肥气体中挥发性硫化合物的现场监测。
Abstract
A method for determination of volatile sulfur compounds-dimethyl sulfide
diethyl sulfide
dimethyl disulfide
and carbon disulfide in livestock waste compost was established using gas chromatography–ion mobility spectroscopy technology. The sample was collected using a gas sampling bag after ammonia removal
separated on a packed gas chromatography column of MXT-1
and detected in both positive and negative modes under the optimized experimental conditions. The results showed that the four sulfur compounds represented good linearity (
R
2
0.99) in their respective linear ranges; the detection
limits were 0.008~0.097 mg/m
3
with recoveries of 85%~116% and relative standard deviation (RSD) of 1.13%~8.42%. The method is free of pretreatment such as pre-concentration or enrichment
sensitive and rapid
and the collection of odorous composting gas can be conducted using a gas sampling bag. The method is sensitive and rapid
which can be used for on-site monitoring of volatile sulfur in compost gas.
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references
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